Dynamic Appeared Pre-evaluation and Construction of Crossing Large Splitting Structure in Extremely Thick Seam With Fully Mechanized Caving Mining

According to large splitting structural engineering problem in extremely thick seam with fully mechanized caving mining, electromagnetic radiation technology is applied to monitor dynamic appeared in mechanized excavation face and mechanized caving face, electromagnetic radiation intensity and feature of pulse number are obtained, which predicts non-dynamic tendency. For cavity characteristic of splitting structure, temporary support and permanent support are strengthened, assisted with filling, grouting, surrounding rock deformation and supporting stability are effectively controlled.